Maybe I can give you a new perspective.
Your modding and acceptance will vary depending on your attitude.
I have a V6 (Firebird), I don't really care all that much for performance. I am an appearance only guy. Of course I maintain my V6, but I don't really care for performance....all of my performance mods include :
A muffler (no 's
) - Flowmaster 80
Synthetic Oil if you count it for the 2 hp gain I got.
Appearance wise, I have done much more.
The only performance mod I plan to get is a reworked exhaust, but more for the sound and attention it brings, not for the power gain.